b47967f1f2
System E (segasyse.c, segasyse_vidhrdw.c, mc8123.c, sn76496.c): - MC-8123 key based decryption from current MAME: Opa Opa (317-0042) and Fantasy Zone II (317-0057) now run (MAME set names and keys) - 315-5124 VDP as in MAME: per VDP status, line counter and frame interrupts (only VDP #1 drives /INT), output levels, per-line CRAM and scroll latching, front layer backdrop, mode 4 sprites - Sega PSG clock (10.738635 MHz / 3) and noise - trackball state saved (Riddle of Pythagoras, Megumi Rescue) Super Hang-On (outrun.c): backport of MAME segaorun for shangon, shangon1, shangon2, shangon3, shangon3d, shangonle (FD1089B, memory mapper, interrupt timing, ADC, YM2151 + SegaPCM). Enduro Racer (sharrier.c): backport of MAME segahang: FD1089B, both 8255 PPIs (mode 2 sound handshake), ADC0804, sub CPU mirrors, YM2151 and YM2203 sound boards, Space Harrier sprites and road. Sets enduror, endurora, endurorb, enduror1, endurobl, endurob2, endurord, enduror1d. The Hang-On conversions shangonrb and shangonrb2 (old shangonb) use the same code with the Hang-On main board map. Sound: - SegaPCM: register layout as in MAME (current address at 0x84, loop at 0x04), 7-bit volumes, 8-voice discrete mode, save states; Super Hang-On PCM pitch fixed - Seibu sound: latches, IRQ vectors and bank saved (Zero Team save states, run ahead and netplay now work) Claude-Session: https://claude.ai/code/session_014P4GcczkZTrzVfrRW8odFY Co-authored-by: zanac <[email protected]> Co-authored-by: Claude Opus 5.5 <[email protected]>
What is MAME 2003-Plus?
MAME 2003-Plus (also referred to as MAME 2003+ and mame2003-plus) is a libretro arcade system emulator core with an emphasis on high performance and broad compatibility with mobile devices, single board computers, embedded systems, and similar platforms.
In order to take advantage of the performance and lower hardware requirements of an earlier MAME architecture, MAME 2003-Plus began with the MAME 2003 codebase which is itself derived from xmame 0.78. Upon that base, MAME 2003-Plus contributors have backported support for an additional 350 games, as well as other functionality not originally present in the underlying codebase.
What games are supported?
View our live compatibility table built using datmagic, a tool created by the MAME 2003-Plus team. Datmagic auto-generates a compatibility table based on the latest XML DAT file. See an incorrect entry? Create a new issue to let us know! This allows us to keep the compatibility table as accurate as possible by fixing it at the source.
Authors: MAMEdev, MAME 2003-Plus team, et al (see LICENSE.md and CHANGELOG.md)
Documentation
User documentation for MAME 2003-Plus can be found in the libretro core documentation library.
Developer documentation can be found in the MAME 2003-Plus wiki.
Development chat
#programming channel of the libretro discord chat server.
Romsets and how to build them for this core
mame2003-plus was originally built from the MAME 0.78 codebase, meaning that 95% or more of MAME 0.78 romsets will work as-is in mame2003-plus, where they immediately benefit from its bugfixes and other improvements. In order to play the new games and games which received ROM updates in mame2003-plus, you will need to find or build the correct romsets.
Read more about rebuilding romsets in the libretro core documentation for mame2003-plus.